| 摘要 |
PURPOSE: An automobile is provided to give an alarm whistle with a simple structure, thereby to cut down the cost and to reduce the weight. CONSTITUTION: An automobile includes a steering wheel(10) arranged on the front of a driver's seat to fulfill a steering function of an automobile with driver's operation, a driver airbag module(20) inserted to the steering wheel to protect a driver at a car accident, and a piezoelectric element(40) arranged on a gap between the steering wheel and the circumference of the driver airbag module and pressurized if a driver presses the driver airbag module to generate electric signals for giving an alarm whistle.
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